A grill that runs 200 degrees too hot? Nah. It's the charcoal, the amount you put in, the amount you might take out, how you arrange it, how you use the vents, the timing, etc. that all affects the temperature. A Weber kettle grill doesn't run too hot or too cold on its own. It doesn't do anything on its own, for that matter! And no fat on a whole chicken, you say? Where, pray tell, might I find those?